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如何将字串 String 转换成整数 int?
int i = Integer.valueOf(my_str).intValue();
int i=Integer.parseInt(str);
如何将字串 String 转换成Integer ?
Integer integer=Integer.valueOf(str);
如何将整数 int 转换成字串 String ?
1.) String s = String.valueOf(i);
2.) String s = Integer.toString(i);
3.) String s = "" + i;
如何 ...
public String str_replace(String from,String to,String source) {
StringBuffer bf= new StringBuffer("");
StringTokenizer st = new StringTokenizer(source,from,true);
while (st.hasMoreTokens()) {
String tmp = st.nextToken();
if(tmp.equals(from)) {
...
import java.util.Timer;
public class Test {
Timer timer = new Timer();
public int userStateTimerStart(int round_id){
timer.schedule(new aaa(round_id), 000, 500);
return round_id;
}
public void mapTimeStart(int round_id){
timer.schedule(new bbb(round_id), 000, 1000);
}
pub ...
import java.sql.*;
public class DBBean
{
private String driverStr = "com.mysql.jdbc.Driver";
private String connStr = "jdbc:mysql://localhost/context";
private String username = "";
private String password = "";
private Connection conn = null;
private St ...
import java.util.Scanner;
public class IntegerReverse {
//testing method
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("请输入一个整数：");
int in = input.nextInt();
System.out.print(reverse(in));
}
//reverse ...
import java.util.*;
import java.io.*;
public class StringPractice {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("input sth");
String st=b ...
Check Details
- 博客分类：
- Java Security
Rsa001 rsa=new Rsa001();
byte[] sign=file2.getFileData();
String s = new String(sign);
System.out.println("sign is "+s);
String[] signatureInfo = s.split("&", 4);
System.out.println("signatureInfo is "+signatureInfo.length);
if(signatureInfo.length!=4){
retur ...
Rsa001 rsa=new Rsa001();
KeyPair key=rsa.create();
byte[] pub=key.getPublic().getEncoded();
byte[] pri=key.getPrivate().getEncoded();
byte[] fileSign=rsa.sign("abc".getBytes(),pri);
String signFileName="abc"+".isop";
System.out.println("out is &quo ...
import java.io.FileInputStream;
import java.io.IOException;
import java.security.*;
import java.security.cert.CertificateFactory;
import java.security.spec.EncodedKeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
public class Rsa001
{
public sta ...
import java.io.File;
import java.io.FileReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandl ...
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class Port ...
public boolean TomcatServer(String port){
try{
URL url = new URL("http://localhost:"+port+"/TestingIdP/");
URLConnection con = url.openConnection();
java.io.BufferedReader in = new java.io.BufferedReader(new
java.io.InputStreamReader(con.getInputStream())) ...
public static boolean ExecRun(String name){
boolean bl=true;
String s = "cmd.exe /c start /min "+name;
try {
Runtime.getRuntime().exec(s);
} catch (IOException e) {
bl=false;
e.printStackTrace();
...
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
public class UnZIPcontrol {
/**
* 创建目录
*
* @param path
* 目录绝对路 ...